Description

Stand density index (SDI) is commonly used as the basis for density management guides for even-aged forest stands. Many tree species follow the same self-thinning trajectory, allowing for the use of stand density index in such guides. Slash pine (Pinus elliottii Englem.) has been shown to depart from the self-thinning trajectory exhibited by other tree species. However, slash pine stands do follow a self-thinning trajectory. A stand density index equation for slash pine is herein developed. Although different from the form generally accepted for other species, the new equation can still be used to estimate relative densities of varying slash pine stands, and it may potentially serve as the basis for a stand density index-based management guide for slash pine plantations.